Trellix Insights: APT29 Abusing Cloud Storage to Deliver Malicious Payloads To European Targets
Last Modified: 2022-08-22 10:49:43 Etc/GMT
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Trellix Insights: APT29 Abusing Cloud Storage to Deliver Malicious Payloads To European Targets
Technical Articles ID:
KB95835
Last Modified: 2022-08-22 10:49:43 Etc/GMT Environment
IMPORTANT: This Knowledge Base article discusses a specific threat that is being automatically tracked by Trellix Insights technology. The content is intended for use by Trellix Insights users, but is provided for general knowledge to all customers. Contact us for more information about Trellix Insights.
Summary
Description of Campaign Victims, mainly in the government and foreign affairs sectors of Europe, are being targeted by APT29 with malware that's hosted on cloud storage services. Dropbox, and in some events Trello, is being leveraged for its hosting services for C2 communication and retrieval of additional payloads. In the event where APT29 utilizes an HTML Smuggling technique, a compromised or spoofed email address is used to send a spear-phishing email with a malicious HTML attachment. Once executed, the attachment runs embedded JavaScript code that decodes and saves content to an archive. In other instances, an IMG file is used to deliver a decoy PDF document and an LNK file. When executed, the user is presented with a blank PDF, and the LNK file is used to launch CMD and side-load a malicious DLL file. Our ATR team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Cluster25 and shared publicly. How to use this article:
This Knowledge Base article discusses a specific threat that's being tracked. The list of IOCs change over time; check Trellix Insights for the latest IOCs. Campaign IOC
Minimum Content Versions
Detection Summary
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